They are the only thing I've found that works. I use one at my bait stations now I can hunt and not spend all my time slapping 'skeeters. The only drawbacks I've found is the cost of the refill kits and you can't take the fuel cylinders on commercial airlines.
You wanna talk mosquitoes...try Alaska. But when I put a Thermacell under my seat on my bear stand, pretty soon there don't seem to be any mosquitoes anymore. The first time I experienced it I didn't really appreciate it until I got out of the stand and found myself in a cloud. They're awesome -- best product ever. Even if you're bathed in DEET, the skeeters will still buzz around you. The Thermacell puts a bubble around you, so that you're not only not getting bit, but you're not getting buzzed, either.
Hands down the best thing out there right now. I was skeptical but the first time I used it I thought all the skeeters were jsut somewhere else but it only took about 5 minutes for them to find me after I shut it off. Totally worth the money!
A perk of majoring in wildlife biology in college is the plethora of hunting knowledge that you collect throughout your course load. One of the most important factors in whether an area can hold large quantities of animals or produce large antlers is forage.
Most universities, state schools and even community colleges offer basic botany courses and plant ID courses. Although it might not be feasable for the average middle age hunter to pay tuition and go back to college to learn hunting...